Research Article
Wood Loss Assessment in Forest of Sal (Shorea robusta) by Heart Rot of Central Terai of Nepal
Table 1
Equation for calculating the total volume, hollowness, and actual volume of logs.
| | Equation for calculating different parameter | Equation number | Basis of equation | Remarks |
| | Volume of log = (3.14d2/4)L | Equation (I) | Cylindrical formula | d = mid-diameter of the log | | L = length of the log | | Cross-sectional area of the thick end of log S1 = ((D1 + D2)/2)2/4)L | Equation (II) | Area of cross section of cylinder | D1 = longest diameter of hollow at thick end | | D2 = shortest diameter of hollow at thick end | | L = length of the log | | Cross-sectional area of the thin end of log S2 = ((D1 + D2)/2)2/4)L | Equation (III) | Area of cross section formula | D1 = longest diameter of hollow at thin end | | D2 = shortest diameter of hollow at thin end | | L = length of the log | | Hollowness volume = ((S1 + S2)/2)L | Equation (IV) | Smalian's formula | S1 = cross section of the thick end of log | | S2 = cross section of the thin end of log | | L = length of the log | | Volume of actual timber = Equation (I) – Equation (IV) | Equation (V) | Subtraction | |
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